hubieran prosperado
-they/you had prospered
Past perfect subjunctiveellos/ellas/ustedesconjugation ofprosperar.

prosperar

Pero debido a que estas especies hubieran sobrevivido, otras no hubieran prosperado, debido a la competencia.
But because these extinct species had survived, others would not have thrived, due to competition.
La propia experiencia de los países desarrollados enseña que, sin la cooperación externa, ellos difícilmente hubieran prosperado o conseguido la recomposición de sus economías.
The experience of developed countries themselves shows that, without external cooperation, they would have had difficulty in prospering or in restructuring their economies.
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